X3CrTi17 is a titanium-stabilized ferritic stainless steel containing about 17% chromium. This datasheet presents the material within the Werkstoff-Nummer (DIN / EN) designation system.
With nominally 17% chromium and a titanium stabilizing addition, 1.4510 offers good resistance to corrosion and oxidation in mildly corrosive and oxidizing environments. The titanium ties up carbon and nitrogen, so the grade can be welded without the risk of intergranular corrosion and does not require post-weld annealing. Being ferritic and essentially nickel-free, it is magnetic, cannot be hardened by heat treatment, and is largely insensitive to chloride stress-corrosion cracking. It is well suited to cold forming such as bending, flanging and deep drawing, and is temperature-stable for the cold end of automotive exhaust systems.
Typical applications include automotive exhaust systems, heat exchangers, hot-water tanks, kitchen and household equipment, and welded components requiring resistance to chloride stress-corrosion cracking.
Typical values, annealed condition, per EN reference data.
| Property | Value | Unit |
|---|---|---|
| Density | 7.7 | g/cm³ |
| Melting range | 1480–1530 | °C |
| Elastic modulus | 220 | GPa |
| Coefficient of thermal expansion (20–100 °C) | 10.0 | µm/m·°C |
| Thermal conductivity (20 °C) | 25.0 | W/m·K |
| Specific heat (20 °C) | 460 | J/kg·K |
| Structure | Ferritic | — |
Specified per EN 10088-2 (W.Nr. 1.4510, X3CrTi17).
| Element | Symbol | Min % | Max % | Role in Alloy |
|---|---|---|---|---|
| Iron | Fe | Balance | — | Base element |
| Chromium | Cr | 16.0 | 18.0 | Corrosion / oxidation resistance |
| Titanium | Ti | 4×(C+N)+0.15 | 0.80 | Stabiliser; ties up C and N |
| Manganese | Mn | — | 1.00 | Deoxidiser |
| Silicon | Si | — | 1.00 | Deoxidiser |
| Carbon | C | — | 0.050 | Low (stabilised, weldability) |
| Nitrogen | N | — | 0.030 | Low (stabilised) |
| Phosphorus | P | — | 0.040 | Residual impurity |
| Sulphur | S | — | 0.015 | Residual impurity |
Nominal: 17Cr titanium-stabilized ferritic stainless steel.
Annealed (+A) condition, per EN 10088-2 for W.Nr. 1.4510.
| Condition | Property | Value |
|---|---|---|
| Annealed | Tensile strength (Rm) | 420–600 MPa |
| Annealed | 0.2% proof strength (Rp0.2) | ≥230 MPa |
| Annealed | Elongation (A5) | ≥23 % |
| Annealed | Hardness | ≤180 HB |
| — | Elastic modulus | 220 GPa |
Values per EN 10088-2; resistant to intergranular corrosion owing to titanium stabilization. Confirm against the inspection certificate (EN 10204).
| Environment | Performance | Notes |
|---|---|---|
| Atmospheric / general | Very Good | Superior to 1.4016; approaches 1.4301 in some media |
| Oxidizing acids | Good | At low-to-moderate concentrations |
| Chloride stress-corrosion cracking | Very Good | Ferritic — largely immune |
| Pitting / crevice corrosion | Moderate | Below molybdenum-bearing grades |
| Oxidation (elevated temperature) | Good | Suited to exhaust cold-end service |
Corrosion resistance is well above 1.4016 and, in many oxidizing media, approaches that of 1.4301 — with the advantage of immunity to chloride stress-corrosion cracking.
A ferritic grade; cannot be hardened by heat treatment. Properties are set by annealing.
Anneal Heat to approximately 780–880 °C and cool in air. Owing to titanium stabilization, post-weld annealing is not required to restore intergranular corrosion resistance. Avoid prolonged exposure near 475 °C (embrittlement).
Readily welded without the risk of intergranular corrosion owing to titanium stabilization; post-weld annealing is not required.
| Welding Process | Applicability | Filler / Consumable |
|---|---|---|
| GTAW / TIG | Very Good | Stabilized ferritic or nickel-base filler |
| GMAW / MIG | Good | Matching stabilized filler |
| Resistance / seam | Good | — |
Use a stabilized stainless or nickel-base filler to maintain weld-metal corrosion resistance.
Machining Guidelines
| Parameter | Recommendation |
|---|---|
| Machinability | Good; similar to other ferritic grades |
| Work hardening | Low rate — superior formability |
| Coolant | Ample flood coolant |
Forming Processes
| Process | Notes |
|---|---|
| Cold forming | Excellent — bending, flanging, deep drawing |
| Hot forming | ~1100–800 °C; anneal afterward |
| Industry | Typical Components | Key Requirements |
|---|---|---|
| Automotive | Exhaust systems, trim | Oxidation resistance + formability |
| Heat transfer | Heat exchangers, tubing | Thermal stability + SCC resistance |
| Water heating | Hot-water tanks | Corrosion resistance + weldability |
| Household | Kitchen and appliance components | Formability + corrosion resistance |
| Product Form | DIN / EN Standard | Notes |
|---|---|---|
| Plate, sheet and strip | EN 10088-2 · W.Nr. 1.4510 | X3CrTi17 |
| Bar, rod and sections | EN 10088-3 · W.Nr. 1.4510 | — |
| Welded tube | EN 10296-2 · W.Nr. 1.4510 | — |
| Technical delivery | SEW 400 | — |
Titanium-stabilized ferritic stainless steel. W.Nr. 1.4510 (X3CrTi17).
| EN Symbol | Cr % | Stabiliser | C % | Best Used For |
|---|---|---|---|---|
| X3CrTi17 | 16–18 | Ti | ≤0.05 | 17Cr-Ti ferritic; exhaust, SCC resistance, weldable |
| X2CrTi12 | 10.5–12.5 | Ti | ≤0.03 | 11Cr muffler-grade ferritic |
| X6Cr17 | 16–18 | — | ≤0.08 | General ferritic; non-stabilized |
| X2CrTiNb18 | 17.5–18.5 | Ti + Nb | ≤0.03 | 18Cr-Ti-Nb ferritic; hot exhaust (441) |
| X2CrMoTi18-2 | 17.5–19.5 | Ti | ≤0.025 | 18Cr-2Mo ferritic; higher corrosion resistance (444) |




